Sonic Underground
Sonic Underground

Sonic Underground

Sonic, Sonia, and Manic are the children of Queen Aleena Hedgehog, the rightful ruler of Mobius, and are pursued relentlessly by Doctor Robotnik and his bumbling bounty hunters sidekicks, Sleet and Dingo. As infants, the siblings were separated and placed in hiding to fulfill a prophecy made by the Oracle of Delphius that the triplets would grow up to find their estranged mother, overthrow Robotnik, and take their places once more as Mobius' rightful rulers.

Sonic, Sonia, and Manic are the children of Queen Aleena Hedgehog, the rightful ruler of Mobius, and are pursued relentlessly by Doctor Robotnik and his bumbling bounty hunters sidekicks, Sleet and Dingo. As infants, the siblings were separated and placed in hiding to fulfill a prophecy made by the Oracle of Delphius that the triplets would grow up to find their estranged mother, overthrow Robotnik, and take their places once more as Mobius' rightful rulers.

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Seasons & Episodes

EP 1

Beginnings (Origins, Part 1)

The history of the Underground is told in detail, from the fall of Mobotropolis to the rise of Robotnik. Included, is a

EP 2

To Catch a Queen

The Hedgehogs begin to learn the important lessons of what it takes to be a freedom fighter.

EP 3

Mobodoon

Manic, Sonic and Sonia must end their training early when Robotnik threatens the Oracle and takes a member of the resist

EP 4

The Price of Freedom

Sonia travels to east Mobius to visit her friend Mindy at the LaTour Estate. After being given a watch by her friend Min

EP 5

Underground Masquerade

Sleet and Dingo plan to collect the taxes owed to Robotnik from the Duke of Velcronia but keep it for themselves. To avo

EP 6

Tangled Webs

The sinister Robotnik blackmails Cyrus, an old friend of Sonic's, by holding his father hostage. Robotnik makes Cyrus ga

EP 7

The Deepest Fear

On a trip to Port Mobius, Sonic, Manic and Sonia are told that ships are sinking due to the Mobian sea-beast. The legend

EP 8

Who Do You Think You Are

Queen Aleena's royal journals are rumored to be buried under a palace in the city of Tashistan. As Sonic and his sibling

EP 9

The Last Resort

While lost in the wastelands of Mobius, Sonic, Manic and Sonia stumble upon an oasis called Lake Valley Resort. Although

EP 10

Come Out Wherever You Are

Sonia is invited to a debutante ball, but before she can be officially announced to society, she and her brothers, Manic

EP 11

Winner Fakes All

Robotnik organizes a track meet to lure Sonic into a trap. Robotnik is sure that Sonic will not sit out on a challenge o

EP 12

A Hedgehog's Home Is Her Castle

The Hedgehogs receive a message they believe is from their cousin. In the message, a castle is left to Sonia, who revels

EP 13

Artifact

The Hedgehogs steal historical artifacts of Mobuis from Robotnik before he can pawn them off at an auction. Sonic and So

EP 14

Bug!

A faction of the Freedom Fighters is wiped out by a swarm of metallic fly-bots. When Manic goes in search of the insects

EP 15

Sonic Tonic

A speed enhancing fluid deemed Sonic Tonic is created by Robotnik to make him as fast as Sonic so that he may finally ca

EP 16

Friend or Foe?

The Hedgehogs converge on the Floating Island, in their latest attempt to find their Mother. Sleet and Dingo also have a

EP 17

Head Games

As Sonic begins to chow chili dogs for a snack, he finds a message in the sack from his mother urging him to head to Spe

EP 18

When in Rome...

Sonic becomes frustrated that maybe all of their efforts of fighting for freedom seem futile. Sonia suggests that they g

EP 19

The Jewel of the Crown

Robotnik has his sights set upon Queen Aleena's crown jewel, which glows as it is moved closer her. Sonic, Manic and Son

EP 20

Three Hedgehogs and a Baby

Sonic, Manic and Sonia find an abandoned baby in an alley and begin a search for the baby's parents. Manic grows particu

EP 21

Dunes Day

Sonic and his siblings travel to the outskirts of Mobius to recruit a tribe of nomads for the Resistance. The Hedgehogs

EP 22

Mummy Dearest

Sonic, Manic and Sonia invade Robotnik's lair to retrieve the Hedgehog crest. After the book is reclaimed, they discover

EP 23

Hedgehog in the Iron Mask

The Hedgehogs latest quest to find their mother takes them to the prison tower where they encounter a masked stranger wh

EP 24

Six Is a Crowd

The Oracle advises the Hedgehogs to undertake a mission which could reveal answers about their future. Sonic, Manic and

EP 25

Flying Fortress (Chaos Emerald Crisis, Part 1)

What is supposed to be a vacation for Sonic, Manic and Sonia turns into a battle to save Mobius when Robotnik attacks wi

EP 26

Wedding Bell Blues

Robotnik announces that he will marry Queen Aleena in a plot to become the king of Mobius. Upon hearing the alarming new

EP 27

No Hedgehog Is an Island (Chaos Emerald Crisis, Part 2)

Sleet and Dingo escape the Flying Fortress with the Chaos Emerald. In a fight over who will control the Emerald's power,

EP 28

Getting to Know You (Origins, Part 2)

The Hedgehogs begin to learn the important lessons of what it takes to be a freedom fighter. The Oracle provides teacher

EP 29

New Echidna in Town (Chaos Emerald Crisis, Part 3)

Knuckles reluctantly makes a deal with Robotnik to turn over Sonic and his family in exchange for finding the Chaos Emer

EP 30

Harmony or Something (Origins, Part 3)

Manic, Sonic, Sonia must end their training early when Robotnik threatens the Oracle and takes a member of the resistanc

EP 31

Country Crisis

Queen Aleena advises the Hedgehogs to travel to a valley of Mobius so that they can bring about peace between two contin

EP 32

Haircraft in Space

Robotnik is using the local hairdresser, Doo-bot, to get information on the citizens that are against him. Sonia becomes

EP 33

Healer

A self proclaimed scientist has come to Robotropolis with a device that will reverse the effects of Robotnik's roboticiz

EP 34

Sonia's Choice

Robotnik has arranged a museum exhibit of the Royal family goblets. Knowing that Sonic, Sonia and Manic will want to rec

EP 35

The Big Melt

The Hedgehogs vacation is interrupted by the news of Robotnik's latest weapon. They are shocked as the submarine melts t

EP 36

Sleepers

On a mission in a distant sector of Robotropolis, the Hedgehogs are informed that freedom fighters have disappeared and

EP 37

Bartleby the Prisoner

Robotnik's new weapon, Art, is the enforcer of Robotropolis new eradication policy. Art's objective is to destroy everyt

EP 38

The Art of Destruction

Robotnik's new weapon, Art, is the enforcer of Robotropolis new eradication policy. Art's objective is to destroy everyt

EP 39

The Pendant

The newly discovered Emerald Peninsula is a perfect place for Robotnik to add slaves to his empire. Sonic, Sonia and Man

EP 40

Virtual Danger

Sonic and Manic play a game of virtual reality to enhance their pilot skills. When the two brothers decide to put their

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